I'll tackle this one since I am originally from Atmore (and Flomaton is 14 miles away). WTCB 990 came on in the late 50s with 500 watts. Calls stood for Tri City (or County) Broadcasting (Flomaton, Century FL, and South Flomaton - or Escambia Co AL, Escambia Co FL, and Santa Rosa County FL). Because of 980 AM in Pensacola, 500 watts was all they could get. Later the station moved to 1090, and relocated to Cantonment. It had the calls WPIK and WRBK over time. Flomaton-Century simply does not have the size to support a station. The only redeeming thing about the station was its call letters ... a decade after it came on, TCB became a hip street-slang expression (for "Takin' Care of Business") , and I often thought someone would pay WTCB to surrender the calls.
Atmore started with WATM in the 50s. It was on 1580, 1590, then 1620. Other call letters have been WSKR WGYJ and WPHG. It was a daytimer, then a 3 tower DA fulltimer on 1590. Then it was moved to the Pensacola area as WNRP.
Its other AM, WASG, was on 1140, then 550, the moved to Cantonment, then silent.